ALUTRUSS QUADLOCK TQ390-2500 is a 4-point aluminium truss cross beam with a length of 250 cm and outer dimensions of 39 × 39 cm. Its four 50 mm main chords have 2 mm wall thickness, while the 20 mm braces also have 2 mm wall thickness. Elements connect using four cones, pivots and pins with a Quick-Lock conical connection. The beam uses TIG welding and EN-AW 6082 T6 aluminium alloy and weighs 13.76 kg.